84 SEBU8605-01
Maintenance Section
Cooling System Coolant (Commercial Heavy-Duty) - Change
Install the bel
t. Refer to Disassembly and Assembly,
“Alternator Belt - Remove and Install”.
i04262370
Coo ling System Coolant
(Commercial H ea vy-Du ty) -
Change
NOTICE
Care must be taken to ensure that fluids are contained
during performance of inspection, maintenance, test-
ing, adjusting and repair of the product. Be prepared to
collect the fluid with suitable containers before open-
ing any compartment or disassembling any compo-
nent containing fluids.
Dispose of all fluids according to Local regulations and
mandates.
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened
component life.
Clean the cooling system and flush the cooling
system before the recommended maintenance
interval if the following conditions exist:
•
The engine overheats frequently.
•
Foaming of the coolant is observed.
•
The oil has entered the cooling system and the
coolant is contaminated.
•
The fuel has entered the cooling system and the
coolant is contaminated.
Note: When the cooling system is cleaned, only
clean water is needed.
NOTICE
When any servicing or repair of the engine cool-
ing system is performed, the procedure must be
performed with the engine on level ground. This pro-
cedure will allow you to accurately check the coolant
level.Thisprocedurewillalsohelpinavoidingtherisk
of introducing an air lock into the coolant system.
Drain
Pressurized S
ystem: Hot coolant can cause seri-
ous burns. To open the cooling system filler cap,
stop the engine and wait until the cooling system
components a
re cool. Loosen the cooling system
pressure cap slowly in order to relieve the pres-
sure.
1. Stop the engine and allow the engine to cool.
Loosen the cooling system filler cap slowly in
order to rel
ieve any pressure. Remove the cooling
system filler cap.
g02119093
Illustration 48
Typical example
2. Open the drain cock or remove the drain plug (1)
on the engine. Also, remove the drain plug (2).
Open the drain cock or remove the drain plug on
the radiator.
Note: Some applications have two drain plugs on the
cooler, only one is required for draining.
Allow the coolant to drain.
NOTICE
Dispose of used engine coolant or recycle. Various
methods have been proposed to reclaim used coolant
for reuse in engine cooling systems. The full distillation
procedure is the only method acceptable by Perkins to
reclaim the coolant.
For information regarding the disposal and the
recycling of used coolant, consult your Perkins dealer
or your Perkins distributor.
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